Knob-spindle attachment.



No 784,620. PATENTED MAR. 14, 1905. A. HITT.

KNOB SPINDLE ATTACHMENT. APPLICATION FILED MAY 25, 1904.

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UNITED STATES Patented March 14, 1905.

ADRIAN HITT, OF JERSEY CITY, NEW JERSEY.

= KNOB-SPINDLE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 784,620, dated March 14, 1905.

Application filed May 25, 1904. Serial No. 209,606.

To (0U whom [It may concern:

Be it known that I, ADRIAN HITT, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Knob-Spindle Attachments, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates especially to means and mechanism employed for securing knobs to lock-spindles, and has for its object the provision of a construction wherein the use of washers and the like for taking up play is rendered unnecessary and wherein the shank of the knob may be fixed to or released from engagement with the spindle at the position required without the use of screws or the equivalent.

To attain the desired end, my invention consists, essentially, in the combination, with a knob-shank and lock-spindle, of a plurality of movable cylinders located within such shank and having different longitudinal axes, said cylinders being perforated for the reception of the lock-spindle, all of which will be hereinafter first fully described and then pointed out in the claim.

In the accompanying drawings, forming a part hereof, Figure 1 is a longitudinal sectionalvicw of a knob-shank embodying my invention. Fig. 2 is a like view of a modification of construction.

Similar numerals of reference wherever they occur indicate corresponding parts in both figures.

1 is a knob made of any desired material and preferred shape. 2 is the shank secured thereto. In the construction illustrated in Fig. 1 of the drawings the shank 2 is perforated or made hollow, the perforation being of two diiferent diameters 3 and A.

5 and 6 are twocylinders conforming, respectively, to the diameters 3 and A of the perforation in the knob-shank. These cylinders are provided with a square perforation for the reception of a knob-spindle 7.

8 is a pin or the equivalent for maintaining the relative position of the two cylinders 5 and 6.

In the modification illustrated in Fig. 2 of the drawings the cylinders 5 and 6 are of the same diameter; but the perforation through the knob-shank is made crooked, while the perforation through the cylinders for the reception of the spindle 7 is straight, as in the construction shown in Fig. 1.

In placing my device in position in connection with a lock or latch the spindle passes through the lock and roses fixed to the door in the usual manner. The inner end of the shank is held in proper relation to the shell of the lock or roses uponthe door, and then by giving the two knobs a slight turn in opposite directions the cylinders 5 and 6 are partially rotated, and as their axes are different a binding at once takes placeboth upon the walls of the shank-perforation and the spindle, firmly holding all the parts in place. In order to release the knobs from the spindle, a reverse movement is required.

Having now fully described my invention, what I claim as new therein, and desire to secure by Letters Patent, is

The combination with a knob-shank and lock-spindle, of a plurality of movable cylinders located within such shank, and having different longitudinal axes, said cylinders being perforated for the reception of the lock spindle, and means for maintaining the relative position of the cylinders, whereby, upon the turning of the knob-shank with respect to the spindle, the cylinders are partially rotated, securing said spindle to the shank.

In testimony whereof I hereto afiix my signature in presence of two witnesses.

ADRIAN HITT. 

